Dongne ArcadeDaily Sudoku
Play a fresh Sudoku puzzle every day, free online. Easy, medium and hard dailies with pencil notes, error check and hints. Race the world on clear time.
Fill 1-9 into every row, column and 3x3 box — the world's favorite brain puzzle.
How to Play Daily Sudoku
- Tap an empty cell, then tap a number (or press 1-9) to fill it in.
- Every row, column and 3x3 box must contain 1-9 with no repeats.
- Memo mode jots small candidate notes; the eraser or Backspace clears a cell.
- Fill all 81 cells correctly to finish — faster times rank higher!
About Daily Sudoku
Sudoku is the world's favorite logic puzzle: fill the 9x9 grid so every row, every column and every 3x3 box contains the digits 1 through 9 exactly once.
A brand-new puzzle arrives every day at midnight (UTC) in three difficulties — easy, medium and hard. Everyone on Earth solves the same board, and every daily puzzle has exactly one solution.
Use pencil notes to track candidates, toggle automatic error checking, and spend up to 3 hints (each adds 30 seconds to your time). Your fastest clear per difficulty goes on the global leaderboard.
Tips & Strategy
- Scan for rows, columns or boxes that already have 7-8 digits placed — the missing ones fall out instantly.
- Use memo mode early: noting candidates in tight boxes reveals hidden singles as the board fills up.
Frequently Asked Questions
Is it really the same puzzle for everyone?
Yes. Each day's puzzle is generated from the date itself, so every player worldwide gets the identical board — a fair race on the same puzzle.
Do hints hurt my ranking?
You get up to 3 hints per puzzle. Each one adds 30 seconds to your recorded clear time, so a hint-free solve always beats an assisted one at equal speed.
Can a daily puzzle have more than one answer?
No. Every puzzle is checked during generation to guarantee exactly one solution, so pure logic is always enough — no guessing required.
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Before your first round
Check the row, column and box before entering a number. Filling a single-candidate cell changes the possibilities in connected units. Notes are candidates rather than confirmed values, so revisit nearby notes whenever you place a definite number.